I think I may have found something . After posting my sample , I decided to test it using just the sample ( instead of the whole file ) and found that I no longer had the problem . The resulting video was correctly encoded as anamorphic wide screen . I then tested the whole file and again no problem .

Pick from:
[1]. A music file ..
[2]. A video file ..
[3]. A coded file ..
[4]. A legal file ..
Answer the following question: What kind of file are they testing ?

[2].